Which series of children's classic books often included the characters "Aunt Fanny & Uncle Quentin"?

"The Famous Five" is a series of children's adventure novels and short stories written by English author Enid Blyton. The first book, "Five on a Treasure Island", was published in 1942. The novels feature the adventures of Julian, Dick, Anne, Georgina (George) and her dog Timmy.

Blyton intended to write only six or eight books in the series, but owing to their high sales and immense success she went on to write 21 full-length Famous Five novels. By the end of 1953, more than six million copies had been sold. Today, more than two million copies of the books are sold each year, making them one of the best-selling series for children ever written.

Aunt Fanny is George's mother, and aunt to Dick, Julian and Anne. She is married to Uncle Quentin, and is, through most of the novels, the principal maternal figure in the lives of the children. She is a very kind and easy-going woman, and shows considerable patience with her husband over his short temper and absent-mindedness.

Uncle Quentin is George's father, and a world-famous scientist, who is kidnapped in several of the children's adventures. He has a quick temper and little tolerance for the children on school holidays, but is a loving husband, father and uncle.

Enid Mary Blyton (11 August 1897 – 28 November 1968) was an English children's writer, whose books have been worldwide bestsellers since the 1930s, selling more than 600 million copies. Her books have been translated into more than 90 languages.